Heading machine



Jul 29, 1924.

C. FASSINGER HEADING MACHINE Original Filed Sept. 23. 1920 4 Sheets-Sheet 1 IIIIPF IIF INVENTOR .Bdl 29. 1924.

' C. FASSINGER HEADING MACHINE Origihal Filed Sept. 23.

1920 4 Sheets-Sheet 2 II lII lil l ll ENVENTOR Juiy 29v 1924.

c. FASSINGER HEADING MACHINE Original Filed Sept. 23. 1920 4 Sheets-Sheet 5 \NVENTOR July 29. 1924. 1,503,312

0 FASSINGER HEADING MACHINE Original Filed Sept. 23. 1920 4 Sheets-Sheet 4 05 5 ll? 10 "a 9 I 80 Patented July 29, I924.

NET

tears CHARLES FASSINGEB, OF CARRICK, PENNSYLVANIA, ASSJIGNOR T0 OLIVER IRON & STEEL CORPORATION, OF EITTSIBURGH, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

nnanme CHINE.

Application filed. September 23, 1920, Serial No. @2331. Renewed October 24, 1923.

To all whom it may concern:

Be it known that 1, CHARLES F ASSINGER, a citizen of the United States, and resident of Carrick, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Heading Machines; and I do hereby declare the following to be a full, clear,,and exact description thereof.

My -invention relates to machines for forming heads on bolts or other headed metal objects and has for its object to provide a heading machine for hot or cold operation which shall operate in an en tirely automatic manner to form the head on the bolt in one or more passes, to carry the blank to the dies and finally to discharge the bolt. 7 Bolt heading machines have heretofore been designed to operate in a semi-automatic manner but in suchmachines it has been necessary for a Workman to introduce the blank successively into the roughing pass and the finishing pass, and a considerable amount of skill 1s required to place the blanks properly in the dies.

According to my present invention, I provide a machine of the general construction of existing bolt heading machines, having either a single set of dies or a roughing die and a finishing die disposed one above the other and opened and closed by suitable power connections. In addition, I provide a carrier which grasps the blank from a holder and, in a two-pass niachine, feeds the blank down to the first pass and holds it while the roughing die is upsetting the end of the blank, then carries the blank further down to the second or finishing die, releases the blank momentarily in order to enable the blank to slide lengthwise to enter the die, again grasps the blank, and carries it down to a discharge point. These successive operations are effected by means of the mechanism described below. v

In the accompanying drawings, Fig. 1 is a plan view of a machine constructed in accordance with my invention; Fig. 2 is a side elevational view of the same machine; Fig. 3 is a front elevational view; Fi 4 is a longitudinal vertical sectional view t ough the dies and the heading block, showing a blank in the first pass; Fig. 5 1s a vertical sectional View similar to Fig. 4, showing the blank in the second pass and the heading block ready to close on the dies; Fig. 6 is a third sectional view similar to Figs. 4 and 5, showing the heading block closed on the dies and the blank in the second or finishing pass; and'Figs. 7 and 8 are enlarged front elevational views of a portion ofthe machine showing the stock gripper and dies, and the movement by which the blank is carried down through the first pass and the second pass and is finally discharged.

The machine is similar-in its general construction to existing two-pass bolt heading machines and comprises a frame 2 mounted on suitable standards 3 and provided at its rear end with bearings for a power shaft 4 which carries a pulley 5 for connection to a suitable source of power, not shown. The power shaft 4 carries a cam 6 for operating the grip lever slides, a crank 7 for operating the heading :block, and a spur gear wheel 8 and a bevel gear wheel 9 for operating slides which carry the stock gripper. The connections from each of the several power elements on the shaft 4 will now be described in their order.

The cam 6 engages a roller 10 carried at the end of a main grip lever slide 11 which extends forward in the machine frame and is received in stationary guides 12 and 13. Within the slide 11 is a second or toggle slide 15, having a lug 16 which engages one end of a spring 17 that is enclosed within the slide 11 and is compressed between shoulders 18 on the guidell and a lug 19 on the toggle slide 15. The lug 16 is perforated to receive a pin 16 which extends through openings 19 on the top and bottom of the main slide 11 and maintains the spring 17 under compression, while permitting relative movement between the slides 11 and 15 in case the toggle slide or dies are jammed for any reason. A. second spring 22 is mounted on a rod 23 that extends between a fixed bearing 24 on the machine frame and a bearing 25 carried by the toggle slide 15.

e toggle slide 15 carries two tog le arms 26 which transmit power from t e slide 15 to a die head 27 that is carried at the upper end of an arm 28 which rocks upon a horizontal shaft 29 journaled in the ate with the dies 33 and 34 to receive the.

stock while being upset, the upper dies 33 and 36 forming the first pass and the lower dies 33 and 37 forming the second pass.

When the cam 6 is in the position shown in Fig. 1 the slide 11 is at the end of its forward movement and has compressed the spring 17, which moves the slide 15 forward against the compression of the spring 22 and this movement of the slide 15 acts through the toggle arms 26 to rock the arm 28 and close the dies, the shock of the stroke being cushioned by the spring 17. As the cam 6 rotates, the spring 17 causes the roller 10 to follow the cam and moves the slide 11 to the rear, thus permitting the slide 15 to be moved by the spring 22 to withdraw the movable dies from thestationary dies, this movement being assisted by the pull of the spring 30 on the arm 28.

The crank 7 acts through a connecting rod 40 and a cross head 41 to reciprocate the heading block 42 which is disposed in line with the dies described above and carries two upsetting dies 43 and 44, as best shown in Figs. 4, 5 and 6.

In order to carry the stock through the two heading passes, I provide a blank gripper operated by means of a slide 50 mounted in upper and lower guides 51 and 52 at the front of the machine,'this slide being moved horizontally at proper intervals by power derived from the shaft 4 through the gear wheel 8, which meshes with a larger gear wheel 53 on a counter-shaft 54 which also carries a cam 55. The cam 55, as shown in Fig. 2, is provided with a long raised portion 56, a shorter raised portion 57, and a still shorter raised portion 58. A roller 59 rides upon the cam 55 and is carried at the end of a sliding rod 60 mounted in bearings 61 in the machine frame and adjustabl connected at the end opposite to the rol er 59 to one arm 62 of a bell crank lever, the other arm 63 of which engages a roller 64 carried by a vertical rod 65 which is secured to the slide 50. Two springs 66 are received in stationary seats 67 in the machine frame, as shown in Fig. 3 and bear against the slide 50.

As the cam 55 rotates, the rod 60 is intermittently oscillated and this movement is transmitted through the bell crank lever 63 and the roller 64 to the slide 50. The raised portions of the cam 55n1ove the slideto the left, as shown in Fig. 3, and the springs 66 return the slide to the right when the roller 59 rides down from the raised portions of the cam 55.

The slide 50 is provided with a dove-tailed guide 70 in which is received a vertically movable slide 71 that carries a vertically adjustable arm 72 which is bent to the left at 73 and thence extends lengthwise of the machine, as shown at 74, Fig. 1. The arm 72 rests at its lower end uponan adjusting screw 75 provided with a lock nut 7 6 and is secured in place by means of suitable bolts'77.

The bent portion 73 of the arm 72 carries a bracket 78 which forms a bearing for a horizontal shaft 79, to the outer end of which is secured a lever 80 provided with a roller 81 and with a spring 82, the lower end of which is secured to one of the bolts 77 of the arm 72.

The inner end of the shaft 79 carries alower gripper jaw 85 which cooperates with a stationary gripper jaw 86 carried by a suitable bracket 87 mounted on the horizontal arm 74, the bracket 87 also providing a bearing for the inner end of the shaft 79. It will beobserved that the spring 82 tends to pull down the lever 80 and thus to close the gripper jaws 85 and 86 while, when the lever 80 rises against the tension of the spring 82, this will rock the shaft 7 9' and the gripper jaw 85.

Power for oscillating the slide 71 vertically is derived from the shaft 4 through the bevel gear 9, which meshes with a bevel gear 90 secured to the upper end of a dia onal shaft 91 which is received in suitable bearings 92 and carries at its lower end a bevel pinion 93 meshing with a bevel gear wheel 94 that is carried by a horizontal counter-shaft 95. Mounted on the shaft 95 is an irregular cam 96, best shown in Fig. 2, upon which travels a roller 97 that is carried in bearings at the lower end of the slide 71. The shaft 95 and the cam 96 rotate in a clockwise direction, as shown in Fi 2,-andthe cam 96 operates to raise the slide 71 from the position shown in Figs. 2 and 3; to its uppermost position and then to lower the slide successively to a second, third and fourth position, these movements taking place in a manner more fully described below.

The counter-shaft 95 is journaled in suitable bearings 97 and carries, in addition to the bevel gear 94 and the cam 96, a second cam 98 and a clutch 99, by means of which the vertical slide may be stopped, and the feed of the blanks interrupted, in case of accident or jamming. The cam 98 is engaged bya roller 100 carried at the lower end of a vertical rod 101 which slides in bearings 102 and is rovided at its upper end with a bent portion 103 extending into thepath of the roller 81 when the parts are in the position shown in Fig. 3.

An inclined plate 105 is provided at the top of the machine to receive the blanks B, which are placed side by side upon the plate 105 either manually or by means of a suitable automatic feeding device,- indicated diagrammatically at 106, Fig. 3. The plate 105 is bent to form a ledge 107 beyond which it has a shoulder 108 and a down-turned portion 109 adjacent to a curved holder 110 which is pivotally mounted at 111 and is provided with a weight 112 which normally maintains the holder 110 in its blank-holding position, as shown in the drawing, but w fch permits the holder 110 to rock when the blank 'is seized by the gripper jaws and pulled down.

The plate 105 is provided adjacent to the .ledge 107 with a slot in which is received the pointed upper end 115 of an L-shaped arm 116, which is pivoted at 117 to the undersideof the plate 105 and is pivotally attached at its outer end to the upper end of a vertical rod 118 which extends down through an opening formed in an arm 119 that extends outward from the member 72 which carries the gripper jaws in the manner described above A nut 120 is secured to the lower end of the rod 118 'and when the slide 71 descends to bring the arm 119 in contact with the nut 120 the rod 118 is pulled down, thus raising the pointed end 115 of the member 116 up through the slot 1 in the plate 105 and pushing the blank B over the ledge 107, whereupon the blank rolls down into the holder 110.

A bracket 125 is secured to the under side of the plate. 105 and is provided at its lower end with an inclined cam surface 126, the function of which is to open the gripper jaws to receive the blank in the manner described below. When the blanks fall into the holder 110 1 they may not always be in the same position in the holder and the difl'erent blanks may differ slightly in length. In order that all of the blanks may have their ends that are to be upset disposed in proper relation to the dies and the header blbck, I provide an adjustable stop 130 which swings on a pin 131 carriedin a stationary bracket 132, as shown in Figs. 1 and 2. vThe position of the stop 130 1s fixed by means of an adjusting screw 133. In order to move eachblank to the rear until its end engages the stop 130, I provide a rod 135'carr1e d by. a boss 136 on the header block 41 and extending into a hollow rod 137 having a down-turned portion 138 which extends into line with th blank held in the holder 110.

The construction of the dies for upsetting and finishing the bolt heads is best.

shown in Figs. 4,5 and 6. The dies 33 form a plain circularopening for receiving opening 141.

the shank of the bolt while the head is being upset by the die 43 carried by the heading block 42. The finishing dies 34, however, are of difierent construction and when placed together form an opening having a straight circular portion 140, an enlarged portion 141 conforming in shape and size to the head of the finished bolt, and a flaring portion 142 which receives the rough head of the bolt and guides it to the portion 141 of the die in the finishing operation.

Fig. 4 shows the dies and the headin block closed in the position where the hea' of a bolt B has just been upset. The head C of the bolt has a fin D extending around its lower edge and the function of the finishing dies is to remove this fin and also to properly shape the head 0 of the bolt. When the dies separate, the bolt is removed from the roughing die and placed in the finishing die, where it rests in the flaring opening 142, as shown in Fig. 5.. When the heading block closes on the dies in its next stroke the header die 44 forces the bolt to the left, as shown in the drawing, and presses the head of the bolt into the finishing This causes the fin D to be pressed up along the sides of the bolt head and' incorporated with the metal of the head, so that the strength of the bolt is not impaired by removing this fin or rib. The final position of the bolt in the finishing die is shown in Fig. 6.

It will be observed on Figs. 3, 7 and 8 that the finishing dies 34 and 37 are so constructed that their vertical lines of division are displaced laterally and located on 0pposite sides of the center of the opening in which the work is received. This is for the purpose of removing the lengthwise fins which are formed on the blank in the roughing dies. The roughing dies are divided on the vertical diameter of the work-receiving opening, and therefore the fins are correspondin 1y located on the vertical diameter of the Tlank. When the partly finished blank is placed in the finishing dies arid these dies are closed, the portions of the dies 34 and 37 which project beyond the vertical diameter of the opening strike the fins and incorporate them in the body of the bolt. This dispenses with the necessity of turning the work, which must always be done in bolt heading machines as heretofore con structed.

In the operationof the machine which I have shown and described, the blanks, which maybe either hot'or cold, according to the kind of'bolts tobe made, are placed on the feeding plate 105 either by hand orv from a suitable automatic feeder. The L-shaped arm 116 is rocked by the arm 119 each time that the slide 71 descends to its lowest position and its pointed end 115 is raised to lift the next blank over the shoulder 107 of the feeding plate and deposit it in the holder 110. The slide 71 at this point is in its lowest position and the horizontal slide 50 is in its farthest position to the left, as shown in F i g. 3. The rotation of the cam 55 permits the slide 50 to be moved to the right by the springs 66 and at the same time the cam 96 raises the slide 71. This compound horizontal and vertical movement of the slides moves the blank gripper diagonally upward and when the slide 71 reaches the upper end of its movement the further rotation of the cam 55 causes the slide 50 to be moved again to the left, thus causing the roller 81 to ride upon the cam 126, as shown in Fig. 7, which rocks the shaft 79 and opens the gripper jaws. On the further movement of the slide 50 to the left the roller 81 rides off the cam 126 and the spring 82 draws down the arm 80, thereby closing the gripper jaws around the blank in the holder 110. The blank is then carried down and into the successive passes of the dies, its movement being indicated in dotted lines, Fig. 8, and the movements taking place as follows:

Immediately after the jaws of the blank gripper close, the slide 71 descends and when the blank has been dropped down nearly opposite to the opening in the upper d1e 33 the horizontal slide 50 moves to the right and places the blank within the die. The movable die then closes on the blank and the header makes its first stroke to upset the end of the blank and form the rough head of the bolt as shown in Fig. 4. When the header and the movable die move away from the bolt, the slide 50 is again moved to the left, thus withdrawing the bolt from the first pass of the die, and immediately thereafter the slide 71 is lowered again to bring the rough bolt opposite to the second pass of the dies, which again close and the header makes its second stroke .to finish the bolt, the lengthwise fins on the partly finished bolt being removed by the oflset projections on the dies 34 and 37. At this time the blank gripper releases the bolt in order that the bolt may move lengthwise in the die and have the fin D removed by entering the opening 141 in the die 44,

as indicated in Figs. 5 and 6. In order to produce this separation of the jaws of the blank gripper, the arm 103:is raised by means of the cam 98 and engages the roller 81 to rock the shaft 79. This separation of the jaws of the blank gripper takes place only momentarily, the arm 103 descending almost at once on account of the shape of the cam 98 and so permitting the jaws to close again before the dies separate. When the finished bolt is released by the separation of the dies it is again carried down and to the left by the combined movement of the slides 71 and 50 and is discharged to'any suitable receptacle.

The machine described above operates to completely finish a bolt with only two operations, namely, the operation in the roughing die and the operation in the finishing die. Other bolt heading machines require additional operations for removing the fins around the head of the bolt and around its shank, such additional operations usually consisting of turning the blank in the dies or acting upon the blank with additional dies for removing the fins. In this machine the fins are removed as an incident of the operation of the finishing die, in the manner described above.

The feeding and blank-manipulating mechanism herein shown is also adapted for use with single-pass bolt heading machines, such as machines for making carriage bolts, the operating cams being suitably modified so the blank is discharged after being upset in the single pass.

It will be evident that the novel features of my invention as herein claimed may be employed with equally good results whether the finished article is an ordinary bolt provided with screw threads, or is to be fastened in place by driving or otherwise, the invention residing in the method in which the head is produced upon the blank.

While I have herein shown and described a preferred embodiment of my invention it is to be understood that the machine may be variously modified as to the details of construction without departing from my invention, and I therefore desire that no limitations be imposed on my invention except such as are indicated in the appended claims.

' I claim as my invention;

1. A heading machine comprisin an upsetting die, a carrier for clasping t e shank of a blank and for presenting the said blank to the said die, the said carrier being arranged to retain its hold on. the said blank during the operation of said die, and to thereafter release the headed article.

2. A heading machine comprising a roughing die, a finishing die and a carrier for c lasping the shank of a blank and for mechanically placing the said blank in the said dies successively.

3. A heading machine comprising an upsetting die," a blank gripper, and means for causing the said blank gripper to clasp the shank of a blank, to present the said blank to the said die to hold said blank during the operation of said die, and to open thereafter to discharge the said blank.

4. A. heading machine comprising a roughingdie, a finishing die, a blank grlpper, and means for causing the said blank gripper to grip a blank, to place the said blank in the said dies successively, and thereafter to discharge the said blank.

5.. A heading machine comprising a roughing die, a finishing die, a blank gripper, and means for causing the said blank gripper to grip a blank, to place the said lank in the said dies successively, and to release the said blank temporarily while the said blank is in the said finishing die.

6. A heading machine comprising an upsetting die, a'blank gripper, a slide carrying the said blank gripper, and means for moving the said slide to cause the said blank gripper to grip a blank and to present the said blank to the said die, the said blank gripper being arranged to retain its hold on the blank during the operation of said die and to thereafter release the headed article.

7. A heading machine comprising a roughing die, a finishing die, a blank gripper, a slide carrying the said blank gripper, and means for moving the said slide to cause the said blank gripper to grip a blank and to place the said blank in the said dies successively.

8. A heading machine comprising an upsetting, die, a blank gripper, a slide carrying the said blank gripper, and means for imparting combined vertical and horizontal movements to the said slide, thereby causing the said blank gripper to grip a blank and to present the said'blank to the said die.

9. A heading machine comprising a roughing die, a finishing die, a blank gripper, a slide carrying the said blank gripper, and means for imparting combined vertical and horizontal movements to the said slide,

thereby causing the said blank gripper to grip a blank and to placethe said blank in the said dies successively.

10. A headin machine comprising a. roughing die, a nishing die, a blank gripper, a slide carrying the-said blank gripper, means for moving the said slide to cause the said blank ipper to grip a blank and to place the said blank in the said dies successively, and means for opening the said gripper to' enable the said gripper to grlp a blank and for thereafter 0 ening the said gripper to discharge the finished article.

11. A headin machine comprising a roughing die, a i wishing die, a blank gripper, a slide carrying the said blank gripper, means for moving the said slide to.- cause the said grip er to grip a blank and to place the said blan in the said dies successively,

and means for opening the said ripper to enable the said gripper to grip a lank, for thereafter opening the said gripper mo:- mentarily while the said blankis in the said finishing die and for thereafter opening the said gripper to discharge the finished article.

12. A headin .machine comprising 'a roughing die, a ishing die, a blank gripper, a slide carrying the said blank gripper means for imparting combined vertical an horizontal movements to the said slide, thereby causing the said blank gripper to discharge the finished article.

13. A heading machine comprising an upsetting die, a blank gripper for placing blanks in said die, a slide carrying the said blank gripper, means for moving the said slide vertically, a second slide carrying the said first-named slide, and means for moving the said second slide horizontally.

14. A heading machine comprising a roughing die, a finishing die, a blank gripper for placing blanks in said dies successively, a slide carrying the said blank gripper, means for moving the said slide vertically, a second slide carrying the said firstnamed slide,va'nd means for moving the said second slide horizontally.

roughing die, a finishing die, a blank gripper, a slide carrying the said blank gripper, means for moving the said slide vertically, a second slide carrying the said first-named slide, means for moving the said second slide horizontally, whereby the blank is placed in the said d'ies successively, and means for opening the said gripper to enable the said gripper to grip .a blank, for thereafter opening the said gripper momentarily While the said blank is in the said finishing die and for thereafter opening the said'gripper to discharge the finished article.

16. A heading machine comprising a roughing die, a finishing die, a blank gripper, a vertically movable slide carrying the said gripper, a horizontally movable slide carrying the said first-named slide, a cam for intermittently moving the said vertical slide, and a cam for intermittently moving the said horizontal slide, the said cams being timed to move the said blank gripper so as to place a blank in the said dies successively.

17. A'heading machine comprising an upsetting die anda blankgripper for carrying shaft, and means for rocking the said shaft.

18.' A heading machine comprising an,

upsetting die and a blank gripper for carrying blanks tothe said die, the said blank gripper comprising ashaft, astationary jaw adjacent to the said shaft, a movable jaw carried by-the said shaft and adapted to cooperate with the said stationary jaw, an arm secured to the said shaft and adapted to impart rocking movement thereto, and a spring secured to the said arm for holding the semi jaws in closed position.

19. A stock feeder for heading machines receiving support, means for stopping the downward movement of the blanks on the said support, and a pivotally movable member adapted to reciprocate through an opening in the said support and to raise the lowest blank over the said stop.

21. A heading machine comprising an upsetting die, a blank gripper for carrying blanks to the said die, a slide carrying the said gripper, a holder for holding blanks in position to be gripped by the said gripper, and means for positioning the said blanks lengthwise in the said holder.

22. A heading machine comprising an upsetting die, a blank gripper for carrying blanks to the said die, a blank holder for holding the blanks in position to be gripped by the said gripper, an adjustable stop disposed adjacent to the said holder to engage one end of the blank held in the said holder, and a movable member adapted to engage the other end of the said blank and to move the said blank against the said stop.

23. A finishing die for bolt heading machines comprising a block having a workreoeiving opening and having means for ermitting the bolt to move lengthwise during the finishing operation, whereby the fin around the edge of the bolt head is incorporated in the bolt head.

24. A, bolt heading machine comprising a die-block having a flaring recess adapted to receive the head of the rough bolt, a second recess of the final size and shape of the bolt head adjacent to the said flaring recess and means for forcing the head of the rough bolt into the said second recess.

25. A bolt heading machine comprising two relatively movable die-blocks cooperating to 'form an elongated recess for receiving the shank of the bolt, a head-receiving recess adjacent to the said elongated recess, a flaring recess in line with the said recesses and adapted to receive the head of a rough bolt and to guide the bolt head into the said head-receivingrecess and means for forcing the head of the rough bolt into said second recess.

26. A finishing die for bolt heading machines comprising two relatively movable blocks cooperating to form an elongated recess for receiving the shank of the bolt, the said blocks being so divided as to provide fin-removing projections, one on each of said blocks.

27. A set of dies for bolt heading machines comprising a roughing die composed of two relatively movable blocks cooperating to form an elongated recess for receiving the shank of the bolt, and a finishing die also comprising two relatively r'novable blocks cooperating to form an elongated recess for receiving the shank of a partly formed bolt, the lines of division between the blocks composing said finishing die being displaced from each other and from the line of division of the said roughing die blockks, whereby the said finishing die reremo es the fins from the shank of the rough bolt without turning the said bolt.

28. A bolt heading machine comprising a roughing die, a finishing die, and mechanically operable means for causing the said dies to completely form a bolt without fins and without additional operations.

29. An upsetting machine comprising a plurality of vertically spaced dies adapted to operate successively to upset a blank, and mechanical means for moving blanks to the said dies successively.

30. An upsetting machine comprising a plurality of dies adapted to operate successively to upset a blank, and mechanical means movable in vertical and horizontal directions for moving said blanks to said dies successively.

In testimony whereof I, the said CHARLES FAssINcnR, have hereunto set my hand.

CHARLES FASSINGER.

Witnesses:

R. D. BROWN, JOHN F. WIL

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